DMAR_IRTA_REG 441 drivers/iommu/intel_irq_remapping.c irta = dmar_readq(iommu->reg + DMAR_IRTA_REG); DMAR_IRTA_REG 484 drivers/iommu/intel_irq_remapping.c dmar_writeq(iommu->reg + DMAR_IRTA_REG,